220432869 has 6 divisors (see below), whose sum is σ = 318403046. Its totient is φ = 146955240.

The previous prime is 220432859. The next prime is 220432871. The reversal of 220432869 is 968234022.

220432869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 212051844 + 8381025 = 14562^2 + 2895^2 .

It is not a de Polignac number, because 220432869 - 2¹⁹ = 219908581 is a prime.

It is a super-2 number, since 2×220432869² = 97181299471142322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220432859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12246262 + ... + 12246279.

Almost surely, 2^220432869 is an apocalyptic number.

It is an amenable number.

220432869 is a deficient number, since it is larger than the sum of its proper divisors (97970177).

220432869 is a wasteful number, since it uses less digits than its factorization.

220432869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24492547 (or 24492544 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 220432869 is about 14846.9818144968. The cubic root of 220432869 is about 604.0767458363.

The spelling of 220432869 in words is "two hundred twenty million, four hundred thirty-two thousand, eight hundred sixty-nine".